“包应包含内容类型部分 \[M1.13\]”

Question

我正在尝试写入 Excel 文件，但我不断收到错误消息：

线程“main”中的异常 org.apache.poi.POIXMLException: org.apache.poi.openxml4j.exceptions.InvalidFormatException: Package should contain a content type part [M1.13]

据我了解，我缺少一个 jar 文件。

谁能帮我看看是哪个文件？

PS 我正在使用 Netbeans。

 import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import javax.swing.JOptionPane;
import org.apache.poi.openxml4j.exceptions.InvalidFormatException;
import org.apache.poi.xssf.usermodel.XSSFCell;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

/**
 *
 * @author nicholaskissaun
 */

public class Tester {

    public static void main (String args \[\])throws FileNotFoundException, IOException, InvalidFormatException{
        int RowCount = 7, iChoice;
        String sChoice;
        XSSFSheet s;
        XSSFRow row1;
        XSSFWorkbook wb;
        XSSFCell r1c1, r1c2, r1c8, r1Episodes;

        FileInputStream fis = new FileInputStream("/Users/nicholaskissaun/Google Drive/Grade 11_12/Computer Science/Java/Term1/src/IA/Profiles/Becky/ShowDetails.xlsx");
        wb = new XSSFWorkbook(fis);
        s = wb.getSheetAt(0);

    }

}

原文由 Tephrite 发布，翻译遵循 CC BY-SA 4.0 许可协议

Answer 1

使用文件扩展名来处理 WorkSheet 类型

  String inputFilename = new File(path).getName();

                    switch (inputFilename.substring(inputFilename.lastIndexOf(".") + 1,
                            inputFilename.length())) {
                        case "xls":
                            return readXLS(path);

                        case "xlsx":
                            return readXLSX(path);
                        default:
                            Log.e(TAG, "No XLS file chosen");
                            return "Please select valid \"Excel\" File\"";
                    }

对于 XLSX 文件：使用 XSSFWorkbook & XSSFSheet

     XSSFWorkbook workbook = new XSSFWorkbook(new FileInputStream(new File(path)));

    XSSFSheet sheet = workbook.getSheetAt(0);

对于 XLS 文件：使用 HSSFWorkbook & HSSFSheet

     HSSFWorkbook workbook = new HSSFWorkbook(new FileInputStream(new File(path)));

    HSSFSheet sheet = workbook.getSheetAt(0);

原文由 Hitesh Sahu 发布，翻译遵循 CC BY-SA 3.0 许可协议